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Special Vehicle Notes

When searching by tire size alone, please be aware that the displayed results
may not be applicable (or recommended) for your vehicle due to several factors
(including but not limited to size, speed rating, load capacity, intended service
conditions, etc.).

Technical error

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How to find your size

All the tire size information is located on your tires’ sidewall.

255

55

18

97

T

Width

Also called Section Width, this is the width of the tire (or thickness) in millimetres, if measured from a tire’s widest point of its outer sidewall to the widest point of its inner sidewall. Why millimetres? It originated in Europe, which uses the metric system.

Ratio

This identifies the tire’s aspect ratio, which is the relationship of the tire’s sidewall height to the tire’s width. In this example, the sidewall height of the tire is 55% of its width. The lower the ratio, the smaller the sidewall height, which means better cornering, but a rougher ride.

Diameter

This number (in inches) indicates that the tire is designed to fit on a wheel with an 18-inch diameter.

Load Index

This indicates how much weight the tire is certified to carry at maximum safe inflation. It doesn’t mean 97 pounds, because it’s actually an assigned value that corresponds with its “actual” load capacity found on a load index chart. If you look up 97 on the chart, you’ll find 1,609 pounds.

Speed Index

This indicates the maximum safe speed at which a tire is certified to carry a load under specified conditions. Speed ratings range from A (lowest) to Y (highest), with one exception: H falls between U and V. Exceeding the lawful speed limit is neither recommended or endorsed.

In order to recommend the right tire for your vehicle, we need to know its exact model information.

Check your owner’s manual, vehicle registration documents, or original sales invoice. One of those should have the full description of your vehicle's year, make, model, and option.

Most vehicle models don’t have just one standard tire size, but different tire sizes depending on the trim or option. So we can’t tell you which tires are compatible with your vehicle without the full vehicle information.